How do you use a compass protractor? Place the metal point in the approximate middle of a piece of paper gently, trying not to poke through the paper. Holding this point steady, bring the pencil end of the compass down and rotate the compass, drawing the pencil end in a circle around the point and creating a perfect circle.
Is a compass and a protractor the same thing?
What does a compass and protractor look like? Mechanics. The protractor and compass serve similar functions, but look very different. A protractor is either a circle or a semicircle. … Compasses, which have also been around for centuries, consist of two legs on a hinge. See also what animal do you identify with
How to construct angles using a compass?
Steps to Construct Angle of 60° with Compass
- Draw a ray AB.
- By taking either A or B as a center and any suitable radius draw an arc above the ray and cutting at a point P.
- Now, with P as the center and having the same radius, draw another arc that meets the previous arc at C.
- Join AC or BC and produce it to D.
- Then ∠ADB = 60°.
How to construct a circle using compass?
Steps:
- Draw a line across the circle to make a " chord "
- Construct the perpendicular bisector of that chord to make a diameter of the circle
- Construct the perpendicular bisector of that diameter to get the center of the circle
How do you measure an angle without using a protractor?
- Draw a horizontal line .
- Take the measure of the line (It would be easier if it is a whole number.) Say the measure is 5 cm.
- Calculate the middle of the line, ( ie. in this case 2.5 cm) and mark there.
- Draw a perpendicular over that mark, which measures more than 5 cm.
- Place the scale or ruler
How do you use a compass to measure angles?
0:014:46Measuring Angles with your Compass - YouTubeYouTubeStart of suggested clipEnd of suggested clipIt may be a simple needle or it may be a disc printed with cardinal directions and angularMoreIt may be a simple needle or it may be a disc printed with cardinal directions and angular measurement markings the most basic compasses are just marked with the cardinal directions north south east.
How do you use a compass tool?
1:473:23Drafting Tools 101 - Learn How to Use the Compass - YouTubeYouTubeStart of suggested clipEnd of suggested clipTogether the best spot to control the compass is the handle. Before you start moving the compassMoreTogether the best spot to control the compass is the handle. Before you start moving the compass think about how long you want the line to be drawn. Now press the anchor into the paper lean.
How do you use a protractor?
1:022:56HOW TO USE A PROTRACTOR TO MEASURE ANGLES! - YouTubeYouTubeStart of suggested clipEnd of suggested clipWith the vertex point and we also want the flat horizontal portion of the protractor perfectlyMoreWith the vertex point and we also want the flat horizontal portion of the protractor perfectly aligned with the bottom line okay our bottom ray that makes up our angle.
What is a compass vs protractor?
A protractor can be used to measure angles as well as draw angles of a specific measure. A compass constructs circles and copies segments without measuring.
How do you use a compass for beginners?
2:225:21How to use a compass:For beginners - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo all you do is slowly turn your compass. Until we have that red needle sitting in that red arrowMoreSo all you do is slowly turn your compass. Until we have that red needle sitting in that red arrow just like that and that's going to tell you what direction you need to go.
How do you read a compass for beginners?
1:293:28How To Accurately Read A Compass - YouTubeYouTubeStart of suggested clipEnd of suggested clipPlace the edge of the compass alongside. One of these blue lines that goes up and down so this isMorePlace the edge of the compass alongside. One of these blue lines that goes up and down so this is pointing to the north here you know that this is the north of top of the map because.
How do you read a protractor?
0:069:29How To Read a Protractor - YouTubeYouTubeStart of suggested clipEnd of suggested clipStep one for reading a protractor is to estimate is your angle acute. Right or obtuse. We've learnedMoreStep one for reading a protractor is to estimate is your angle acute. Right or obtuse. We've learned that acute angles are angles that are less than ninety degrees.
How do you figure out angles?
1:235:06Use a Level to Determine an Angle Without Measuring - YouTubeYouTubeStart of suggested clipEnd of suggested clipOnce you get this plumb perfectly centered in the bubble perfectly centered then you move down rightMoreOnce you get this plumb perfectly centered in the bubble perfectly centered then you move down right here and it's time to just strike your line that's it.
Which side of protractor do you use?
Both scales go from 0 to 180, but they run in opposite directions. If the angle opens to the right side of the protractor, use the inner scale. If the angle opens to the left of the protractor, use the outer scale.
What to do if the line does not pass through the protractor?
If the line does not pass through the protractor’s arc, extend the angle's line until it does. Alternatively, you can align the edge of a piece of paper with the angle’s leg to pass beyond the edge of the protractor, continuing the line of the angle.
How to use a protractor to measure angles?
To measure angles with a protractor, first place the center point along the bottom edge of the protractor over the vertex of the angle you're measuring. Line up the bottom edge of the protractor with one leg of the angle.
How to draw an angle with a protractor?
To draw an angle with a protractor, first place the center point along the bottom edge of the protractor where you want the vertex of the angle to be. Draw a small dot in the hole on the protractor to mark the vertex. Then, line the bottom edge of the protractor up with the vertex and draw a straight line along it.
How to draw an angle with a ruler?
Using a ruler, the flat edge of your protractor or another straight edge, connect the vertex with the marked degree, drawing the second leg. This second leg completes your angle. To verify you’ve drawn the angle accurately, use the protractor to measure it.
How to measure the origin of an angle?
2. Place the origin over the center point , or vertex, of the angle you want to measure. The small hole in the middle of the base of the protractor is the origin. Align the vertex of the angle with the center of the cross in the origin. ...
What is a protractor?
A protractor is a handy tool used to measure and draw angles. Generally, semi-circular in shape, protractors are also available in full-circle, 360-degree versions. If one look at the object has you completely confused, never fear; learning to use the tool is simple.
What are the three ways to measure an angle?
Approximate the measure of your angle. Angles can be classified in three ways: acute, obtuse, and right. Acute angles are narrow (less than 90 degrees), obtuse angles are wide (greater than 90 degrees), and right angles are exactly 90 degrees (two lines perpendicular to each other).
Protractors are fun and easy to use
Have a look at this animation (press the play button) to see how to make a neat angle using a protractor and ruler:
Measuring
Protractors usually have two sets of numbers going in opposite directions.
Have a Go Yourself!
Try to measure the angles A, B and C inside the triangle. Drag the protractor and rotate it using arrow keys.
